Originally posted on 12/29/2020:

You should check out one of the MVNO's

I was super skeptical but tried out Mint Mobile on an unlocked phone I had. I was with Verizon for YEARS paying over 200$/mo for the family. I haven't regretted the decision to switch once. I now have a total phone bill for the year of less than 1k. Plenty of data, phone coverage is on the Tmoible network and you would never know the difference.
There are other MVNO's that operate on the big networks so if you need a sim that works with a CDMA only phone, just use one of those. I always check out the CNET Cheapskate Blog for current deals if there are any.